Chair Of The Board

Dame Angela Watkinson DBE

Dame Angela had early careers in banking and special education. She was elected as a councillor on the London Borough of Havering, a county councillor for Essex and entered parliament as the MP for Upminster in 2001.

Over a period of 16 years she held various ministerial posts in opposition and government, including Lord Commissioner to the Treasury, Homelessness, Fire and Rescue Services and Early Years Education. She has previously also been a member of The Council of Europe and The Committee on Standards in Public Life. She was awarded a damehood for services to politics and her community work with young people’s organisations and charities for children with ADHD and Autism.

Chief Executive

Peter Paul

MSc (Addictive Behaviours)

Peter Paul has over 13 years hands-on experience in the field of addiction as a consultant and overseeing the establishment of rehabilitation centres.
Peter has written, launched and facilitated numerous evidence-based, group work programmes for both rehabilitation centres and a variety of institutions across the UK.

Peter has worked with a broad range of compulsive behaviours, such as addictions (alcohol, drugs and sex), eating disorders, mental health and depression. Peter has also developed programmes and workshops for schools working for the inclusion of young people, parents and teachers. His school programmes provide a better understanding of the physical, psychological and legal implications and effects of drugs and alcohol as well as looking at eating disorders, the warning signs and the best course of action once identified.

Treatment Director

Obi Unaka

BSc (hons) MCMI

Obi Unaka is a therapist, clinical supervisor, consultant and registered manager with experience of working with individuals presenting with problematic substance use and process or behavioural addictions.

Obi has established and developed a number of rehabilitation facilities, and holds strategic and operational responsibility for the Charterhouse Clinic group.

Obi has vast experience of developing treatment services and leading clinical teams within residential, community and criminal justice settings.

Consultant Psychiatrist

Dr J S Grewal


Dr Jas Grewal is a Consultant Psychiatrist working in a full time NHS post in Coventry as a Liaison Psychiatrist.

Dr Grewal is the Consultant Psychiatrist for Charterhouse Clinic Flore; and also has his own private practice in Coventry and Warwickshire.

Dr Grewal qualified as a doctor with a Bachelor of Medicine and Surgery (MBBS) degree in 1993 from The Royal Free Hospital School of Medicine, London. He worked for 9 years gaining a wide medical experience in various specialties including Anaesthetics, Paediatrics and A&E before specialising in Psychiatry.

Dr Grewal became a Member of the Royal College of Psychiatrists (MRCPsych) in 2005 and received his Certificate of Completion of Training (CCT) in 2008. Dr Grewal is dual qualified and listed on the General Medical Council (GMC) Register as a Consultant Specialist in:

  • General Adult Psychiatry
  • Addiction Psychiatry

Dr Grewal further specialized in the treatment of Healthcare Professionals (HCPs) with Addiction and Psychiatric problems. For many years, Dr Grewal offered support and guidance to the Sick Doctors Trust (SDT) and the British Doctors and Dentists Group (BDDG). Dr Grewal has extensive experience of treating doctors who are under investigation by the GMC and whose registration is restricted by the GMC.

Dr Grewal achieved a Master of Business Administration (MBA) degree from the Open University in 2011, and is also a member of the Faculty of Medical Leadership and Management (FMLM).

Dr Grewal is a member of The Society for the Study of Addiction (SSA), The Medical Council on Alcohol (MCA) and The Specialist Clinical Addictions Network (SCAN) and the Spirituality and Psychiatry Special Interest Group of The Royal College of Psychiatrists.

Dr Grewal has full Medical Indemnity Insurance with the MDDUS, and is registered as a BUPA specialist

Dr Grewal has successfully completed his yearly appraisal and revalidation as required by the GMC. He takes an active role in training and teaching Medical Students and Junior Doctors.